Examples with DatagramSocket java.net.DatagramSocket used on opensource projects

Example 81 with DatagramSocket

use of java.net.DatagramSocket in project jdk8u_jdk by JetBrains.

the class BadKdc method go0.

public static void go0(String... expected) throws Exception {
    System.setProperty("sun.security.krb5.debug", "true");
    // Idle UDP sockets will trigger a SocketTimeoutException, without it,
    // a PortUnreachableException will be thrown.
    DatagramSocket d1 = null, d2 = null, d3 = null;
    // Make sure KDCs' ports starts with 1 and 2 and 3,
    // useful for checking debug output.
    int p1 = 10000 + new java.util.Random().nextInt(10000);
    int p2 = 20000 + new java.util.Random().nextInt(10000);
    int p3 = 30000 + new java.util.Random().nextInt(10000);
    FileWriter fw = new FileWriter("alternative-krb5.conf");
    fw.write("[libdefaults]\n" + "default_realm = " + OneKDC.REALM + "\n" + "kdc_timeout = " + toReal(2000) + "\n");
    fw.write("[realms]\n" + OneKDC.REALM + " = {\n" + "kdc = " + OneKDC.KDCHOST + ":" + p1 + "\n" + "kdc = " + OneKDC.KDCHOST + ":" + p2 + "\n" + "kdc = " + OneKDC.KDCHOST + ":" + p3 + "\n" + "}\n");
    fw.close();
    System.setProperty("java.security.krb5.conf", "alternative-krb5.conf");
    Config.refresh();
    // Turn on k3 only
    d1 = new DatagramSocket(p1);
    d2 = new DatagramSocket(p2);
    KDC k3 = on(p3);
    test(expected[0]);
    test(expected[1]);
    Config.refresh();
    test(expected[2]);
    // shutdown k3
    k3.terminate();
    d3 = new DatagramSocket(p3);
    d2.close();
    // k2 is on
    on(p2);
    test(expected[3]);
    d1.close();
    // k1 and k2 is on
    on(p1);
    test(expected[4]);
    d3.close();
}

Example 82 with DatagramSocket

use of java.net.DatagramSocket in project jdk8u_jdk by JetBrains.

the class DatagramTimeout method main.

public static void main(String[] args) throws Exception {
    boolean success = false;
    DatagramSocket sock = new DatagramSocket();
    try {
        DatagramPacket p;
        byte[] buffer = new byte[50];
        p = new DatagramPacket(buffer, buffer.length);
        sock.setSoTimeout(2);
        sock.receive(p);
    } catch (SocketTimeoutException e) {
        success = true;
    } finally {
        sock.close();
    }
    if (!success)
        throw new RuntimeException("Socket timeout failure.");
}

Example 83 with DatagramSocket

use of java.net.DatagramSocket in project jdk8u_jdk by JetBrains.

the class LocalSocketAddress method main.

public static void main(String[] args) throws SocketException {
    InetAddress IPv6LoopbackAddr = null;
    DatagramSocket soc = null;
    try {
        List<NetworkInterface> nics = Collections.list(NetworkInterface.getNetworkInterfaces());
        for (NetworkInterface nic : nics) {
            if (!nic.isLoopback())
                continue;
            List<InetAddress> addrs = Collections.list(nic.getInetAddresses());
            for (InetAddress addr : addrs) {
                if (addr instanceof Inet6Address) {
                    IPv6LoopbackAddr = addr;
                    break;
                }
            }
        }
        if (IPv6LoopbackAddr == null) {
            System.out.println("IPv6 is not available, exiting test.");
            return;
        }
        soc = new DatagramSocket(0, IPv6LoopbackAddr);
        if (!IPv6LoopbackAddr.equals(soc.getLocalAddress())) {
            throw new RuntimeException("Bound address is " + soc.getLocalAddress() + ", but should be " + IPv6LoopbackAddr);
        }
    } finally {
        if (soc != null) {
            soc.close();
        }
    }
}

Example 84 with DatagramSocket

use of java.net.DatagramSocket in project jdk8u_jdk by JetBrains.

the class PortUnreachable method execute.

void execute() throws Exception {
    // pick a port for the server
    DatagramSocket sock2 = new DatagramSocket();
    serverPort = sock2.getLocalPort();
    // send a burst of packets to the unbound port - we should get back
    // icmp port unreachable messages
    //
    InetAddress addr = InetAddress.getLocalHost();
    byte[] b = "Hello me".getBytes();
    DatagramPacket packet = new DatagramPacket(b, b.length, addr, serverPort);
    //close just before sending
    sock2.close();
    for (int i = 0; i < 100; i++) clientSock.send(packet);
    serverSend();
    // try to receive
    b = new byte[25];
    packet = new DatagramPacket(b, b.length, addr, serverPort);
    clientSock.setSoTimeout(10000);
    clientSock.receive(packet);
    System.out.println("client received data packet " + new String(packet.getData()));
    // done
    clientSock.close();
}

Example 85 with DatagramSocket

use of java.net.DatagramSocket in project jdk8u_jdk by JetBrains.

the class SendSize method main.

public static void main(String[] args) throws Exception {
    DatagramSocket serverSocket = new DatagramSocket();
    new ServerThread(serverSocket).start();
    new ClientThread(serverSocket.getLocalPort()).start();
}